I think this is part of the problem also, they keep remaking classics, often with a diverse cast, that aren’t as good as the originals and diversity becomes associated with bad.
For example, New Aladin is vastly inferior to the old Aladin, that’s not Will Smiths fault (he didn’t write and direct it) but people associate the movie with him. It’s not fair but it’s reality.
If the Little Mermaid isn’t as good as the original (good luck reaching that bar) it’s going to be associated with Halle, fair or not she’s the face that will be remembered because she’s the high profile change.
Cinderella wasn’t amazing but it didn’t have “controversy”, it’s largely forgotten, Beauty and the Beast wasn’t amazing but it didn’t have “controversy”, it’s largely forgotten. Disney is setting these actors up to fail and in cases of gender or race swapping people associate the actors with the failure.